AirHint found the following cheapest one-way flights from London (LHR) to Porto (OPO) in September 2026 (see full year).
One-Way flights
| 29 Sep | Vueling Airlines | ||
| 02 Sep | Vueling Airlines | ||
| 16 Sep | Iberia | ||
| 15 Sep | Iberia | ||
| 14 Sep | Iberia | ||
| 17 Sep | Iberia | ||
| 03 Sep | Vueling Airlines | ||
| 05 Sep | Iberia | ||
| 10 Sep | TAP | ||
| 24 Sep | TAP |
Also check the deals for return flights from London to Porto in September.
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